Tobacco-pipe.



S. D. BLANDFORD.

TOBACCO PIPE.

APPLICATION FILED MAR. n. 1914.

Patented Jan. 2, 1917 Wmasses:

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SYDNEY DARA BLANDFORD, OF ST. J'OI-INS, NEWFOUNDLAND.

TOBACCO-PIPE.

Specification of Letters Patent.

Patented Jan. 2, P917.

Application filed March 17, 1914. Serial No. 825,275.

To all whom it may concern Be it known that I, SYDNEY DARA BLAND- FORD, a subject of the King of Great Britain, residing at St. Johns, in the Island of Newfoundland, have invented a certain new and useful Improvement in Tobacco-Pipes, of which the following is a specification.

This invention relates to tobacco-pipes and has for its object to provide means for rendering a pipe self-cleaning.

The devices heretofore employed for cleaning pipes have generally been very complicated in construction and have been directed for the most part to the absorption or segregation of the fluid which accumulates in the bore of the pipe. Practical experience has shown that these devices are only partially successful and generally fail altogether after the pipe has been in use for a short time, or else require to be continually supplemented by washing, steaming or other cleansing process. Furthermore, such devices have been unable to deal with fluid accumulations when the latter become mixed (as they invariably do) with tobacco dust and ashes. Hence the ordinary smoker usually prefers the plain pipe, and keeps it in work ing order by pushing straws, wires or the like through the bore. These latter cleansers may be available for home use, but cannot conveniently be carried about by the smoker.

In accordance with this invention the pipe is provided with cleaning mechanism comprising a rod which may have at each end a knob or protuberance of such section and diameter as to conform to and fit closely within the bore of the tube.

Each knob, provided its transverse section conforms to the bore of the pipe, may be of any section whatever, but an oval or spherical shape assists the easy insertion and removal of the rod.

The pipe according to this invention is illustrated on the accompanying drawings, whereonz-- Figure 1 shows the pipe in section, and Fig. 2 is a sectional plan of the mouth-piece.

Referring to the drawings it will be seen that the pipe comprises a bowl 0, stem B and a mouth-piece A. The mouth-piece and stem are provided with the usual bore through which the smoke passes. Within the bore a rod D is arranged. A recess E is cut in the stem B and another recess F in the mouth-piece A.

The rod, as shown, is provided with a knob G at each end thereof the rod entering the stem for a limited distance so as to leave a passage for the smoke between the knob and the opening of the bore.

hen the rod is in position one knob rests against the wall of the recess E and the other against the wall of the recess F thereby securing the rod in a fixed position and permitting the free passage of the smoke from the bowl to the mouth.

The act of separating the mouth-piece from the pipe and removing the rod automatically wipes or scrapes the bore free from any obstruction. Although experience has shown that the bore of the pipe may be cleansed merely by drawing back the mouthpiece for a short distance (without com pletely removing the rod) and pushing or screwing it into place again, yet as a general rule this operation suffices merely to remove any temporary obstruction that may occur at the bowl end, and as the fluid and other substances accumulating in the bore have a tendency to adhere to the rod, it is necessary to effect the complete withdrawal occasionally for cleaning purposes.

It is not essential, though it is convenient, that the bore of the mouth-piece should be of the same shape and diameter as that of the bowl part of the stem it being only necessary that the knobs on the rod conform respectively to the different bores. The advantage of employing a uniform bore throughout is that either end of the rod may be inserted in the mouth-piece. The drawing illustrates the use of the rod for a pipe having a straight stem, but by employing a flexible rod the device can equally well be applied to one with a curved stem.

Variations of the device may be used in which, for instance, the knob is placed at.

one end of the rod only; or the rod may not extend the full length of the bore from the bowl toward the mouth-piece, or the rod may be separated in the middle, each part being separately withdrawn or the end of the mouth-piece may be left open in line with the bore as in ordinary pipes, the rod, having a knob only at the bowl end, being pulled or pushed completely through the bore; but none of these variations are as satisfactory in practice as first described and illustrated in the drawings. I

What I claim and desire to secure by Letters Patent of the United States is 1. A tobacco pipe comprising a bowl porticn having a stem, a separable mouthpiece therefor, said stem and mouthpiece having mating bores, the bore in the mouthpiece being forked at the exit thereof, a recessed shoulder Within the mouthpiece at the end of the bore therein and between its bifurcations, a shoulder below the bowl and terminating the bore therein, a cleaner rod within said bores and extending their entire length, a scraping plug at the end of said rod abutting against the shoulder in the bowl portion, and a scraping plug at the other end received Within the recessed shoulder in the mouthpiece.

2. In a tobacco pipe comprising a bowl SYDNEY DARA BLANDFORD.

Witnesses:

CHAS. ONEILL Connor, KATHERINE SINNOTT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

